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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/make/lst.lib/lstConcat.c	Lines:	13	13	100.0 %
Date:	2017-11-07	Branches:	4	4	100.0 %


/*	$OpenBSD: lstConcat.c,v 1.20 2010/07/19 19:46:44 espie Exp $	*/
/*	$NetBSD: lstConcat.c,v 1.6 1996/11/06 17:59:34 christos Exp $	*/

/*
 * Copyright (c) 1988, 1989, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*-
 * listConcat.c --
 *	Function to copy a list and append it to another.
 */

#include "lstInt.h"
#include <sys/types.h>
#include <stddef.h>
#include "memory.h"

/*-
 *-----------------------------------------------------------------------
 * Lst_Concat --
 *	Concatenate two lists. New elements are created to hold the data
 *	elements but the elements themselves are not copied.
 *	If the elements themselves should be duplicated to avoid
 *	confusion with another list, the Lst_Duplicate function
 *	should be called first.
 *
 * Side Effects:
 *	New elements are created and appended to the first list.
 *-----------------------------------------------------------------------
 */
void
Lst_Concat(Lst l1, Lst l2)
{
	LstNode ln;	/* original LstNode */
	LstNode nln;	/* new LstNode */
	LstNode last;	/* the last element in the list. Keeps
			 * bookkeeping until the end */
	if (l2->firstPtr != NULL) {
		/* The loop simply goes through the entire second list creating
		 * new LstNodes and filling in the nextPtr, and prevPtr to fit
		 * into l1 and its datum field from the datum field of the
		 * corresponding element in l2. The 'last' node follows the
		 * last of the new nodes along until the entire l2 has been
		 * appended.  Only then does the bookkeeping catch up with the
		 * changes. During the first iteration of the loop, if 'last'
		 * is NULL, the first list must have been empty so the
		 * newly-created node is made the first node of the list.  */
		for (last = l1->lastPtr, ln = l2->firstPtr; ln != NULL;
		     ln = ln->nextPtr) {
			PAlloc(nln, LstNode);
			nln->datum = ln->datum;
			if (last != NULL)
				last->nextPtr = nln;
			else
				l1->firstPtr = nln;
			nln->prevPtr = last;
			last = nln;
		}

		/* Finish bookkeeping. The last new element becomes the last
		 * element of l1.  */
		l1->lastPtr = last;
		last->nextPtr = NULL;
	}
}



Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lstConcat.c,v 1.20 2010/07/19 19:46:44 espie Exp $ */
2			/* $NetBSD: lstConcat.c,v 1.6 1996/11/06 17:59:34 christos Exp $ */
3
4			/*
5			* Copyright (c) 1988, 1989, 1990, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Adam de Boor.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			/*-
37			* listConcat.c --
38			* Function to copy a list and append it to another.
39			*/
40
41			#include "lstInt.h"
42			#include <sys/types.h>
43			#include <stddef.h>
44			#include "memory.h"
45
46			/*-
47			*-----------------------------------------------------------------------
48			* Lst_Concat --
49			* Concatenate two lists. New elements are created to hold the data
50			* elements but the elements themselves are not copied.
51			* If the elements themselves should be duplicated to avoid
52			* confusion with another list, the Lst_Duplicate function
53			* should be called first.
54			*
55			* Side Effects:
56			* New elements are created and appended to the first list.
57			*-----------------------------------------------------------------------
58			*/
59			void
60			Lst_Concat(Lst l1, Lst l2)
61			{
62			LstNode ln; /* original LstNode */
63			LstNode nln; /* new LstNode */
64			LstNode last; /* the last element in the list. Keeps
65			* bookkeeping until the end */
66	✓✓	256284	if (l2->firstPtr != NULL) {
67			/* The loop simply goes through the entire second list creating
68			* new LstNodes and filling in the nextPtr, and prevPtr to fit
69			* into l1 and its datum field from the datum field of the
70			* corresponding element in l2. The 'last' node follows the
71			* last of the new nodes along until the entire l2 has been
72			* appended. Only then does the bookkeeping catch up with the
73			* changes. During the first iteration of the loop, if 'last'
74			* is NULL, the first list must have been empty so the
75			* newly-created node is made the first node of the list. */
76	✓✓	942100	for (last = l1->lastPtr, ln = l2->firstPtr; ln != NULL;
77		364056	ln = ln->nextPtr) {
78		364056	PAlloc(nln, LstNode);
79		364056	nln->datum = ln->datum;
80		728112	if (last != NULL)
81		364056	last->nextPtr = nln;
82			else
83		364056	l1->firstPtr = nln;
84		364056	nln->prevPtr = last;
85			last = nln;
86			}
87
88			/* Finish bookkeeping. The last new element becomes the last
89			* element of l1. */
90		106994	l1->lastPtr = last;
91		106994	last->nextPtr = NULL;
92		106994	}
93		128142	}
94